diff --git a/patches/api/patches.api b/patches/api/patches.api
index 7ea364a9a..b53b2c301 100644
--- a/patches/api/patches.api
+++ b/patches/api/patches.api
@@ -400,6 +400,10 @@ public final class app/revanced/patches/pixiv/ads/HideAdsPatchKt {
 	public static final fun getHideAdsPatch ()Lapp/revanced/patcher/patch/BytecodePatch;
 }
 
+public final class app/revanced/patches/protonmail/signature/RemoveSentFromSignaturePatchKt {
+	public static final fun getRemoveSentFromSignaturePatch ()Lapp/revanced/patcher/patch/ResourcePatch;
+}
+
 public final class app/revanced/patches/rar/misc/annoyances/purchasereminder/HidePurchaseReminderPatchKt {
 	public static final fun getHidePurchaseReminderPatch ()Lapp/revanced/patcher/patch/BytecodePatch;
 }
diff --git a/patches/src/main/kotlin/app/revanced/patches/protonmail/signature/RemoveSentFromSignaturePatch.kt b/patches/src/main/kotlin/app/revanced/patches/protonmail/signature/RemoveSentFromSignaturePatch.kt
new file mode 100644
index 000000000..f3d2b2dd2
--- /dev/null
+++ b/patches/src/main/kotlin/app/revanced/patches/protonmail/signature/RemoveSentFromSignaturePatch.kt
@@ -0,0 +1,42 @@
+package app.revanced.patches.protonmail.signature
+
+import app.revanced.patcher.patch.PatchException
+import app.revanced.patcher.patch.resourcePatch
+import app.revanced.util.findElementByAttributeValue
+import java.io.File
+
+@Suppress("unused")
+val removeSentFromSignaturePatch = resourcePatch(
+    name = "Remove 'Sent from' signature",
+    description = "Removes the 'Sent from Proton Mail mobile' signature from emails.",
+) {
+    compatibleWith("ch.protonmail.android")
+
+    execute {
+        val stringResourceFiles = mutableListOf<File>()
+
+        get("res").walk().forEach { file ->
+            if (file.isFile && file.name.equals("strings.xml", ignoreCase = true)) {
+                stringResourceFiles.add(file)
+            }
+        }
+
+        var foundString = false
+        stringResourceFiles.forEach { filePath ->
+            document(filePath.absolutePath).use { document ->
+                var node = document.documentElement.childNodes.findElementByAttributeValue(
+                    "name",
+                    "mail_settings_identity_mobile_footer_default_free"
+                )
+
+                // String is not localized in all languages.
+                if (node != null) {
+                    node.textContent = ""
+                    foundString = true
+                }
+            }
+        }
+
+        if (!foundString) throw PatchException("Could not find 'sent from' string in resources")
+    }
+}
\ No newline at end of file